I have a yaml file that looks like this:

    # The following key opens a door
    key: value

Is there a way I can `load` and `dump` this data while maintaining the comment?

Save/dump a YAML file with comments in PyYAML

I&#39;d like to format my `Logger` output to include the current memory usage, for part of a long-running process.

Is there anything built-in to Ruby for this, a bit like PHP&#39;s [`memory_get_usage()`][1]?  Or do I have to execute some shell commands to get it from `ps`?


  [1]: http://au2.php.net/manual/en/function.memory-get-usage.php

Get current ruby process memory usage

How to determine if the current thread inside a method is a main thread, or just a thread that is asynchronous and created? Does the ID tell me?

iPhone: How to determine if thread is main thread?

<p>How to determine if the current thread inside a method is a main thread, or just a thread that is asynchronous and created? Does the ID tell me?</p>


Hi I am woundering if you can check to see if a NSString equals a specific value say for instance a name of a person?

I am thinking along the lines of

    if (mystring == @&quot;Johns&quot;){
        //do some stuff in here
    }



how to check if NSString = a specific string value?

In Xcode 4.2, there is a new preference under the General tab called &quot;iOS Device Discovery&quot; with the checkbox option &quot;Support Wirelessly Connected Devices.&quot;

What does this option do?  Once checked, how can we use this new capability?

What does the Xcode 4.2 preference &quot;Support Wirelessly Connected Devices&quot; do?

Is it possible to write every `NSLog` not only into console, but into a file too? I want to prepare this without replacing `NSLog` into `someExternalFunctionForLogging`.

It will be real problem to replace all `NSLog`. Maybe there is possibility for parsing data from console or catching messages?   

How to NSLog into a file

I&#39;m writting an application for iphone, which communicates with my server using REST. The main problem is, I need to identify user somehow. Not so long ago, we were allowed to use UDID, but now its not allowed anymore. So what should I use instead? I need some kind of identifier on iphone, so user will delete application, install it again, and he will get same id.

iOS unique user identifier

Apple&#39;s doc could have been more clear on how to submit an update version.

As asked in the title,
What&#39;s the difference between

1. version number in itunes connect(which you have to supply when you submit an update)
2. bundle version in xcode
3. bundle versions string, short

Are they related in any way?  

 

What&#39;s the difference between &quot;version number&quot; in iTunes Connect, &quot;bundle version&quot;, &quot;bundle version string&quot; in Xcode?

In my little iPad app I have a &quot;switch language&quot; function that uses an observer. Every view controller registers itself with my observer during its `viewDidLoad:`.

    - (void)viewDidLoad
    {
        [super viewDidLoad];
        [observer registerObject:self];
    }

When the user hits the &quot;change language&quot; button, the new language is stored in my model and the observer is notified and calls an `updateUi:` selector on its registered objects.

This works very well, except for when I have view controllers in a TabBarController.  This is because when the tab bar loads, it fetches the tab icons from its child controllers without initializing the views, so `viewDidLoad:` isn&#39;t called, so those view controllers don&#39;t receive language change notifications. Because of this, I moved my `registerObject:` calls into the `init` method.

Back when I used `viewDidLoad:` to register with my observer, I used `viewDidUnload:` to unregister. Since I&#39;m now registering in `init`, it makes a lot of sense to unregister in `dealloc`.

But here is my problem. When I write:

    - (void) dealloc
    {
        [observer unregisterObject:self];
        [super dealloc];
    }

I get this error:

&gt; ARC forbids explicit message send of &#39;dealloc&#39;

Since I need to call `[super dealloc]` to ensure superclasses clean up properly, but ARC forbids that, I&#39;m now stuck. Is there another way to get informed when my object is dying?

Custom dealloc and ARC (Objective-C)

I know that the presence of the more view controller (navigation bar) pushes down the UIView by its height.  I also know that this height = 44px.  I have also discovered that this push down maintains the `[self.view].frame.origin.y = 0`.

So how do I determine the height of this navigation bar, other than just setting it to a constant?

Or, shorter version, how do I determine that my UIView is showing with the navigation bar on top?

---------
The light bulb started to come on. Unfortunately, I have not discovered a uniform way to correct the problem, as described below.

I believe that my whole problem centers on my autoresizingMasks. And the reason I have concluded that is the same symptoms exist, with or without a UIWebView. And that symptom is that everything is peachy for Portrait. For Landscape, the bottom-most UIButton pops down behind the TabBar.

For example, on one UIView, I have, from top to bottom:

UIView – both springs set (default case) and no struts

UIScrollView - If I set the two springs, and clear everything else (like the UIView), then the UIButton intrudes on the object immediately above it. If I clear everything, then UIButton is OK, but the stuff at the very top hides behind the StatusBar Setting only the top strut, the UIButton pops down behind the Tab Bar.

UILabel and UIImage next vertically – top strut set, flexible everywhere else

Just to complete the picture for the few that have a UIWebView:

UIWebView - Struts: top, left, right Springs: both

UIButton – nothing set, i.e., flexible everywhere

Although my light bulb is dim, there appears to be hope.


---------------

Please bear with me because I needed more room than that provided for a short reply comment.

Thanks for trying to understand what I am really fishing for ... so here goes.

1) Each UIViewController (a TabBar app) has a UIImage, some text and whatever on top. Another common denominator is a UIButton on the bottom. On some of the UIViewControllers I have a UIWebView above the UIButton.

So, UIImage, text etc. UIWebView (on SOME) UIButton

Surrounding all the above is a UIScrollView.

2) For those that have a UIWebView, its autoresizingMask looks like:

       —
       |
       —

       ^
       |
       |
|—| ←----→ |—|
       |
       | 
       V
The UIButton&#39;s mask has nothing set, i.e., flexible everywhere

Within my -viewDidLoad, I call my -repositionSubViews within which I do the following:

If there is no UIWebView, I do nothing except center the UIButton that I placed with IB.

If I do have a UIWebView, then I determine its *content*Height and set its frame to enclose the entire content.

    UIScrollView *scrollViewInsideWebView = [[webView_ subviews] lastObject];
    webViewContentHeight = scrollViewInsideWebView.contentSize.height;
    [webView_ setFrame:CGRectMake(webViewOriginX, webViewOriginY,
                              sameWholeViewScrollerWidth, webViewContentHeight)]
Once I do that, then I programmatically push the UIButton down so that it ends up placed below the UIWebView.

Everything works, until I rotate it from Portrait to Landscape.

I call my -repositionSubViews within my -didRotateFromInterfaceOrientation.

Why does the content height of my UIWebView not change with rotation?.

From Portrait to Landscape, the content width should expand and the content height should shrink. It does visually as it should, but not according to my NSLog.

Anyway, with or without a UIWebView, the button I&#39;ve talked about moves below the TabBar when in Landscape mode but it will not scroll up to be seen. I see it behind the TabBar when I scroll &quot;vigorously&quot;, but then it &quot;falls back&quot; behind the TabBar.

Bottom line, this last is the reason I&#39;ve asked about the height of the TabBar and the NavigationBar because the TabBar plants itself at the bottom of the UIView and the NavigationBar pushes the UIView down.

Now, I&#39;m going to add a comment or two here because they wouldn&#39;t have made sense earlier.

With no UIWebView, I leave everything as is as seen by IB.

With a UIWebView, I increase the UIWebView&#39;s frame.height to its contentHeight and also adjust upward the height of the surrounding UIScrollView that surrounds all the sub-views.

Well there you have it.


Content Type	Original Author	Original Content on Stackoverflow
Question	Henley	View Question on Stackoverflow
Solution 1 - Iphone	Noah Witherspoon	View Answer on Stackoverflow

iPhone: How to determine if thread is main thread?

Iphone Problem Overview

Iphone Solutions

Solution 1 - Iphone

Get current ruby process memory usage

Save/dump a YAML file with comments in PyYAML

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